Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/5AEOlGZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-25b49665-8753-469d-892d-f9a07f4ed033",
      "cw-8447be5b-a6b5-4e0e-8d54-bacebbbaf582"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-96690801-9791-4699-abd9-ce4f621e569a",
    "manifestId": "https://dam.iuav.it/iuav/containers/5AEOlGZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-8447be5b-a6b5-4e0e-8d54-bacebbbaf582"
  }
}